//
//  类的底层实现.h
//  面试题
//
//  Created by Toj on 8/25/21.
//

void _objc_init(void)
{
    static bool initialized = false;
    if (initialized) return;
    initialized = true;
    
    // fixme defer initialization until an objc-using image is found?
    environ_init();
    tls_init();
    static_init();
    lock_init();
    exception_init(); // 分类加载?
// 加载类
    _dyld_objc_notify_register(&map_images, load_images, unmap_image);
}
